Boiler



Dec. 12, 1961 M. GUszMANN 3,012,548

BOILER Filed July l0, 1959 6 Sheets-Sheet l INVEN TOR.

Dec. 12, 1961 M. GUszMANN 3,012,543

BOILER Filed July 10, 1959 6 sheets-sheet V2 www@ Dec. 12, 1961 M.`GuszMANN 3,012,548

4 BOILEIR Filed July lO, 1959 6 Sheecs-SheefI 3 INVENToR. MA X 6U5ZMA N N Dec. 12, 1961 M. GuszMANN 3,012,548

' BOILER Filed July l0, 1959 6 Sheets-Sheet 4 INVENToR. MAX USZMNIY Dec. 12, 1961 M. GUszMANN BOILER e sheetssneet 5 Filed July l0, 1959 mVENroR. MAX GUSZMANN BY Dec. 12, 1961 M. GUszMANN 3,012,548V

BOILER Filed July 1o, 1959 f e sheets-sheet e JNVENToR MAX GUSZMA'lY/Y Patented Dec. 12., 1961 3,012,548 BOILER Max Guszmann, 45 W. 81st St., New York, NY. Filed Iluly 10, 1959, Ser. No. 826,314 '7 Claims. (Cl. 122 235) The present invention relates to a boiler and more particularly it relates to boilers which can be easily dismantled into several relatively small elements.

The present application is a continuation in part of my co-pending application Serial Number 794,308, filed February i9, 1959, and entitled: Steamboilerit is an object of the present invention to provide a boiler comprising mild steel tubes which are welded together to form a plurality of water tube units, which can be individually dismantled and easily assembled to form the boiler whereby the assembly can be carried out in situ, c g. at the location of ultimate use of the boiler, the individual units being sufficiently small to be transported into the space for the boiler through conventional doors or the like.

lt is the further object of the present invention to provide means contributing to a highly economical and efficient structure whose individual units and sections ythereof can be easily removed and/ or replaced.

It is another object of the present invention to provide means ensuring in a boiler of the aforesaid structure rapid water circulation in a simple and effective manner.

@ther objects and advantages of the present invention will become apparent from a further reading of the description and of the appended claims.

With the above and other objects in view, the present invention includes in a boiler, in combination, a fire-box including a wall having an outlet for combustion gases; stack of flat water tube units, one unit at one end of the stack being located adjacent the wall of the tire-box, each unit including inlet means, outlet means, a set of spaced water tubes communicating with the inlet and outlet means, and wall means, secured to the water tubes and extending in the spaces between the same to form passage means through said units, said wall means of said units of said stack together forming ue wall means in the spaces between said water tubes and removable closure means for closing gaps between the perimetric portions of adjacent units and between the perimetric portion of said one unit and the wall of the tire box so that a tortuous flue passage communicating with the outlet of the lire box is formed by said closure means and the flue wall means, while each unit can be individually removed and replaced after removal of said removable closure means. l

The present invention also encompasses in the inventive combination, a lire box, including a wall having an outlet for combustion gases, a stack of wa-ter tube units, one unit at one end of the stack being located adjacent to the wall of the hre box, each unit including a header having inlet means arranged in a row, outlet means arranged in a row, a set of spaced Water tubes connected at the ends thereof to the headers, respectively and communicating with the inlet and outlet means, and wall means secured to said water tubes and extending in the spaces between the same transverse to the water tubes to form passage means through the unit, said wall means of a plurality of adjacent units together forming a plurality of continuous Hue Wall means in the spaces between the water tubes, said flue wall means having overlapping spaced portions with staggered ends, removable closure means for closing gaps between the periinetric portions of adjacent units and between the perimetric portion of said one unit and the wall of the tire box so that a tortuous flue passage communicating with the outlet of fire box is formed by the closure means and said flue wall means, a first connecting tube means having a row of outlet members, respectively, detachably attached to the inlet means, a second connecting tube means having a row of inlet members, respectively, detachably attached to the outlet means, and a third connecting tube means, connecting said first and second connecting tube means having fresh water inlet means so that the water tube units are rigidly connected by said first, second and third connecting tube means and communicating with the same 4to establish water circulation, and whereby each unit can be individually removed and replaced after removal of the removable closure means.

Thus, the elements of the boiler which are detachably connected to each other may broadly comprise a first connecting tube supplying water to a plurality of water tube units from which the water ows to a second connecting tube or steam dome. Each of the water tube units is separately detachably connected to the lirst and second connectingV tubes, respectively, so that individual water tube units can be easily detached for cleaning, repair or other reason. A third connecting tube connects the second connecting tube or steam dome with the first connecting tube. The fresh water supply is introduced into the third connecting tube. Fresh water passes from the third connecting tube into the first connecting tube, is 'then distributed to the individual water tube units and passes from the water tube units into second connecting tube or steam dome. A vaporized portion of the ywater leaves the steam dome through a steam conduit, while another portion of the water recirculates from the watercontaining area of the steam dome through the third connecting tube towards the first connecting tube. Combustion gases formed in the re box are lead through a tortuous passage formed by the individual water tube units so that the water in the water tube units is heated by the passing combustion gases. It is preferred, according to the present invention that the steam dome is not exposed to the combustion gases.

The novel lfeatures which are considered characteristic for the invention are set forth in particular ,in the appended claims. The invention itself, however, both as to its construction and its mode of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings, in which: y FIG. l is an elevational view partially in cross section of a boiler constructed pursuant to the present invention;

FlG. 2 is a sectional view taken along the line 2 2 of FIG. l;

FIG. 3 is a sectional view taken along the line 3 3 of FG. l;

' FIG. 4 is a schematic elevational side view of another embodiment of a boiler according to .the present invention; v

FlG. 5 isa schematic elevational front view of the boiler shown in FIG. '4;

lFlG."6Y is a schematic sectional view taken along the line 6 6 in FIG, 4;

:IX lX in FIG. 7. Referring now more'specically to the drawings, and particularly to the embodiment of the present invention as shown in FIGStl-, water tube units 1, 2 and 3 are shownI forming a stack of water tube units. Fire box 4`includes wall 41 having an outlet 42 for combustion `gases formed in fire box 4. Water tube unit 3 located at one end of the stack of water tube units is arranged adjacent to vertical, tubular wall 41. The aforesaid tube units 1, 2 and 3 include tube means 11, 21 and 31, flanged inlet means 12, 22, 32 and flanged outlet means 13, 23 and 33, respectively. Each of the water tube units 1-2--3 forms a wall having passage means 14, 24, and 34, respectively, for guiding combustion gases from the tire box 4.

The passage means of adjacent water tube units are staggered, so that tube unit 3 communicates with fire box outlet 42. Passage means 14 of water tube unit 1 communicate lwith flue 43 for removal of the combustion gases from fire box wall 41 guided past water tube units 1, 2 and 3.

Removable closure means are provided for closing gaps between periinetric portions of adjacent water tube units and for closing the gap between wall 41 and water tube unit 3. These removable closure means comprise T-irons 1S, 25, 35 and 45 welded along the outermost water tube units and of wall 41, and columns of shaped bricks 16, 26 and 36 stacked between adjacent T-irons and connected by refractory mortar. The lower portion of pit 4a of fire box 4 is defined by a refractory wall44.

lt can readily be seen that the combustion gases formed in fire box 4 will follow the tortuous paths via the aforesaid passage means indicated by arrows 46, 36, 26 and 16 to flue 43 and that each of the water tube units can be individually removed and replaced after removal of bricks 16, 26 or 36 and opening of the flanges or like coupling means of the respective inlet and outlet means.

Water tube unit 2, as illustrated in FIG. 2 comprises a pair of parallel, horizontal headers, namely header 27 and header 28. The unit also includes a set of water tubes 29 having the ends thereof, respectively, connected to headers 27 and 28. Header 27 is connected to flanged inlet means 22 and header 28 to flange outlet means 23. Walls 229 are arranged between adjacent tubes 29 and one of the headers. In the case of water tube unit 2-as illustrated-walls or bales 229 are arranged between adjacent tubes 29 and header 27 but spaced from header 28 so that between adjacent tubes 29 and headers 28 passage means 24 for the passage of combustion gases according to arrow 46 are formed.

Header 27 communicates through inlet means 22 with first connecting tube 50, and header 28 communicates through outlet means 23 with a steam dome or collector drum 60. First connecting tube means 50 includes coupling means consisting of flanged outlet means 51, 52, 53 and 54 connected to corresponding flanged inlet means such as indicated by numerals 12, 22 and 32. Similarly, flanged outlet means 13, 23, 33 and flanged outlet means of wall 42 which will be described further below, connect with flanged inlet means 61, 62, 63 and 64 of drum 60. Second connecting tube 70 connects first connecting tube 50 with second drum or dome 60 and is provided at a location below drum 60 with fresh water inlet means 71.

The above described structure comprising the stack of water tube units, the fire box wall, first and second connecting tubes, the individual elements of which are detachably connected with each other, forms a rigid communicating structure in which a liquid can circulate. Steam or like heated medium will be discharged through outlet means 65 and the medium which is thus removed from the system will be replaced through fresh water inlet means 71. Circulation is enhanced by the temperature drop in second connecting tube or pipe 70 which is due to the introduction of fresh water into the second connecting pipe 70 and also to the arrangement of a portion of the second connecting tube 70 outside of insulated shell 90. Shell 90 is only schematically illustrated in FIG. l, 2 and 3 and includes a fire box door as well as a removable section facing water tube units 1, 2 and 3 which section can be easily removed when one of the water tube units is to be disconnected and replaced. Shell is of conventional design and does not form an essential part of the present invention. It is, however, preferred according to the present invention to expose a portion of tube 70 to lower temperatures than the remainder of the water-containing structure in order to increase water circulation throughout the system.

The boiler is illustrated in FIGS. l and 3 as comprising three detachable water tube units, the present invention however being not limited to any specific number of tube units.

The wall means forming fire box 4 comprise in addition to wall 41, vertical Walls 47, 48 and 49 as well as an upper horizontal wall and a frontal vertical wall extending downwardly from the upper horizontal wall to a header 441. Each of these walls has spaced header tubes and Wall-forming tubes connecting the space header tubes and wall members between the header tubes and the wallforming tubes, the tubular wall members of wall 41 are of such shape as to form outlet 4Z for combustion gases between adjacent Wall-forming tubes. Inlet and outlet means are connected to the header tubes and in turn communicate with the first connecting tube 5t) and drum 60, respectively.

As illustrated, walls 47 and 4S are detachahly connected by a couplingr or flange arrangement 442. lt is also possible to omit blind flange arrangement 442 and to make walls 47 and 48 integral. When walls 47 and 48 form an integral structure, the entire wall means of the fire box constitutes one detachable element. By arranging blind flange connection 442, the wall means of the fire box are divided into two correspondingly smaller individually detachable elements.

The re box forming Iwall means and the stack of tubes units for the liquid to be heated are supported by a foundation 7 formed of bricks or the like and covered with sheet iron cover 8. However, it is also possible to rest the boiler structure on a brick or the like foundation without interposition of sheet iron cover S. In the latter case, preferably, the foot portions of the boiler structure are placed on and slightly embedded in a refractory mortar.

To prevent upward escape of combustion gases between adjacent water tube units and between water tube unit 3 and fire box wall 41, iron bars 5 and 6 are welded along and bridging the upper headers of adjacent units. Bar means 9 is placed upon fixed bar sections 5 and 6 to the gap between the same.

By way of example only and the present invention not being limited to the following data, the various elements illustrated in FIGS. l-3 for instance having the following dimensions:

Length of individual tubes 14: 1500 mm. diameter; 3"; diameter of heads 23 and 24: 6; diameter of first connecting tube 25: 8" diameter of steam drum 26: 24"; diameter of third connecting tube 27: 6"; diameter of water feed line 28: l1/2; steam conduit 40: 3". The boiler may operate for instance at a pressure of about 200 lbs. and in accordance with the above dimensions will have a total heating surface of about 20 m.2. The above data are given by way of example only, the invention not being limited to any specific dimensions of the boiler members.

As illustrated, the drum 60 is located outside fire box 4, a single feeder (first connecting tube means 50) supplies water to all Water tube units and the wall means of the fire box, and intensive Water circulation is effected through second connecting tube means 7 0.

FIGS. 4-6 schematically illustrate another boiler arrangement according to the present invention in which the stack of water tube units comprises units 11, 12, 13 and 45. and is arranged adjacent water tube wall 7 of' l outlet means connecting all upper header means with said drum means, and respective coupling means located between and detachably joining all upper header means with said second outlet means of said drum means and said rst connecting tube means with all lower header means, whereby said liquid is heated and circulates through said tube units, said drum means, said second connecting tube means and said first connecting tube means back to the lower header means for the purpose of transmitting a predetermined quantity of heat to said drum and thence through said first outlet means.

2. A multi-tube boiler according to claim 1, a plurality of tubes arranged in staggered relation to each other in each tube unit and in said one vertical wall means defining said fire box.

3. A boiler according to claim 1, said bafiie means eX- tending across and at predetermined heights and spaced from and in staggered relation to each other, so that the combustion gases liow in a first direction from said fire box transversely of an upper portion of said tube units and then in a second direction opposed to the first direction and across a lower portion of said tube units, whence said combustion gases are discharged through said flue.

4. A multi-tube boiler comprising a fiue, a tire box including vertical tubular wall means, one of said vertical wall means terminating in upper and lower header means, a plurality of spaced apart, tube units, each tube unit forming a section located adjacent said one vertical wall means and being substantially coextensive in height with the latter, further upper and lower headermeans bounding each tube unit and in communication therewith, each tube unit and at least said one vertical wall means including at least two rows of tubes disposed in staggered relation to each other, the row of tubes in one unit being staggered to an adjacent row of tubes in the neighboring tube unit, drum means, first outlet means connected to said drum means, first connecting tube means in communication will all lower header means, second connecting the tube means forming circulation means for a liquid and interconnecting said first connecting tube means with said drum means, inlet means for a liquid located inter mediate said drum and said first connecting tube mean.'y and connected to said second connecting tube means, re spective second outlet means connecting all upper header means with said drum means, and respective coupling means located between and detachably joining all upper header means with said second outlet means adjacent said drum means and said first connecting tube means with all lower header means, whereby each of said tube units may be removed as a section while liquid when introduced through said inlet means is heated and circulates through the tube units, said drum means, said second connecting tube means and said first connecting tube means back to the lower header means for the purpose of transmitting a predetermined quantity of heat collected in said drum through said first outlet means.

5. A multi-tube boiler comprising a flue, a tire box having vertical tubular wall means, one of said vertical wall means terminating in upper and lower header means, a plurality of spaced apart, sectional tube units located adjacent said one vertical wall means and substantially coextensive in height with the latter, further upper and lower header means, respectively, bounding said tube units and in communication therewith, means releasably bridging said further upper header means at the top thereof, means sealing said tube units and said one vertical wall means in lateral direction thereof, respective batiie means mounted on said one vertical wall means and on said tube units, so that a tortuous path is provided for the combustion gases coming from the fire box and passing along and upwardly of said one vertical wall means, thence downwardly of and thereafter upwardly of the remaining tube units, successively, while said gases are guided to said fiue for discharge, drum means, first outlet means connected to said drum mcans, first connecting tube means in communication with all lower header means, second connecting tube means forming circulation means for a liquid and interconnecting said first connecting tube means with said drum means, inlet means for a liquid connected to said second connecting tube means, respective second outlet means connecting all upper header means with said drum means, and respective coupling means located between and detachably joining all upper header means with said second outlet means of said drum means and said first connecting tube means with all lower header means, whereby said liquid is heated and circulates through said tube units, said drum means, said second connecting tube means and said first connecting tube means back to the lower header means for the purpose of transmitting a predetermined quantity of heat from said drum through said first outlet means.

6. A multi-tube boiler according to claim 5, wherein said vertical tubular wall means forming said tire box are provided with further coupling means for detachably connecting said vertical tubular wall means with each other.

7. A multi-tube boiler comprising a liuc, a fire box having vertical tubular wall means, one of said vertical wall means terminating in upper and lower header means, a plurality of spaced apart, sectional tube units located adjacent said one vertical wall means and substantially coextensive in height with the latter, further upper and lower header means, respectively, bounding said tube units and in communication therewith, respective baflie means mounted on said one vertical wall means and on said tube units, so that a tortuous path is provided for the combustion gases coming from the fire box and passing along and upwardly of said one vertical wall means, thence downwardly of and thereafter upwardly of the remaining tube units, successively, while said gases are guided to said flue for discharge, drum means, first outlet means connected to said drum means, first connecting tube means in communication with all lower header means, second connecting tube means forming circulation means for a liquid and interconnecting said first connecting tube means with said drum means, inlet means for a liquid connected to said second connecting tube means, respective second outlet means connecting `all upper header means with said drum means, and respective coupling means located between and detachably joining all upper header means with said second outlet means of said drum means and said first connecting tube means with all lower header means, whereby said liquid is heated and circulates through said tube units, said drum means, said second connecting tube means and said tirst connecting tube means back to the lower header means for the purpose of transmitting a predetermined quantity of heat from said drum through said first outlet means.

References Cited in the file of this patent UNITED STATES PATENTS 1,930,688 Murray Oct. 17, 1933 2,859,737 Banker Nov. 11, 1958 FOREIGN PATENTS 590,380 France Mar. 16, 1925 1,019,206 France Oct. 29, 1952 626,651 Great Britain July 19, 1949 

